56440380151 has 4 divisors (see below), whose sum is σ = 56448251392. Its totient is φ = 56432508912.

The previous prime is 56440380131. The next prime is 56440380169. The reversal of 56440380151 is 15108304465.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56440380151 - 2¹¹ = 56440378103 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56440380151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56440380131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3924855 + ... + 3939208.

It is an arithmetic number, because the mean of its divisors is an integer number (14112062848).

Almost surely, 2^56440380151 is an apocalyptic number.

56440380151 is a deficient number, since it is larger than the sum of its proper divisors (7871241).

56440380151 is an equidigital number, since it uses as much as digits as its factorization.

56440380151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7871240.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 56440380151 in words is "fifty-six billion, four hundred forty million, three hundred eighty thousand, one hundred fifty-one".